纳米笼
材料科学
反射损耗
微波食品加热
阻抗匹配
光电子学
纳米技术
电阻抗
复合材料
复合数
计算机科学
电信
电气工程
工程类
催化作用
化学
生物化学
作者
Fei Wu,Lingyun Wan,Ting Wang,Muhammad Tariq,Tariq Shah,Pei Liu,Qiuyu Zhang,Baoliang Zhang
标识
DOI:10.1016/j.jmst.2021.11.013
摘要
It is challenging to prepare a binary assembled metal-organic framework (MOF) by anisotropic epitaxial growth method. Besides, nanocages (NCs) with hollow structures are often constructed to improve microwave absorbing abilities. Herein, we combine the selective epitaxial growth and hollow engineering technologies to fabricate hybrid MOF-derived NCs. Benefiting from the unique nanocage/porous structure, complementary magnetic/dielectric components and suitable impedance matching characteristics, the optimized absorber (CoNi/TiO2@PC-NCs) exhibits unique microwave absorbing properties. It is worth noting that the minimum reflection loss (RLmin) of the absorber reaches -65.3 dB, and the overall effective absorption bandwidth (EAB, RL < -10 dB) covers 15.1 GHz (2.9–18 GHz). The maximum EAB under a single thickness covers 4.4 GHz, displaying skipping dual-band coverages at both high and low frequencies. This work might provide a novel perspective for the synthesis of assembled MOF-derived absorbers.
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